Peter Jackson is hilarious. He looks like he's about to ask you for spare change.
Considering 3D. I totally agree. I haven't gone to see a 3D film (outside of DisneyWorld) in a standard theatre precisely because of what you're talking about. Still too much of a novelty. Actors and things moving ONLY because of how it projects out of the screen. I seem to recall (and it might have been on a Hobbit video blog) someone talking about how they're very considerate of this and how they just want natural depth. Still, I don't think there will ever be a time where 3D isn't a novelty.
I hope that's true. I imagine the studio wouldn't have it any other way, whatever his feelings on it. Totally a novelty. Sure you could have a book that include background noises for the scene you were reading, but it would just be different, not better. Probably just a bit distracting, like 3D in films.